1. National Ocean Service NGS, NOS, NOAA Real-Time GPS Positioning of Ships To Integrate Navigation Services Real-Time GPS Positioning of Ships To Integrate Navigation Services David B. Zilkoski National Geodetic Survey Silver Spring, Maryland 20910-3282 Dave.Zilkoski@noaa.gov

2. National Ocean Service Vision: Everyone is able to know where they are and where other things are anytime, anyplace! The mission of the National Geodetic Survey is to deliver and evolve the nation’s foundation of reference for latitude, longitude, height, velocity, shoreline, and gravity throughout the United States with consistency, accuracy, timeliness, currency, and easy access to support public safety, economic prosperity, and environmental well being. Check out our Website http:\\www.ngs.noaa.gov

3. National Ocean Service NGS, NOS, NOAA Promoting Safe Navigation The key to safe navigation is accurate positioning. To navigate safely mariners not only need to know where they are but at the same time they need to know where the things around them are.

4. National Ocean Service NGS, NOS, NOAA Integrated Navigation Services NOAA proposes a navigational service that uses GPS and NSRS to provide the mariner with an integrated suite of decision making tools. The goal of the proposal is to increase the capacity of American ports by providing them with the entire suite of pertinent NOAA data products. These products will be provided to the mariner digitally, in real time, and will be complete, accurate, and up-to-date.

5. National Ocean Service NGS, NOS, NOAA Phases of the Demonstration Project Demonstrate the feasibility of using GPS to determine accurate GPS heights on large marine vessels Acquire information to describe the location and shape of the channel, shoreline, and docking areas in the GPS coordinate system Relate the ship to the bottom of the channel, shoreline, and docking areas Integrate real-time GPS positioning of ships with electronic charts

6. National Ocean Service NGS, NOS, NOAA 3-D Positioning of Marine Vessels using GPS GPS Antennas

7. National Ocean Service NGS, NOS, NOAA 3-D Positioning of Marine Vessels using GPS Equipment used for GPS height and altitude measurement on an ATD

8. National Ocean Service NGS, NOS, NOAA 3-D Positioning of Marine Vessels using GPS Container ship with ATD mounted on top container

9. National Ocean Service NGS, NOS, NOAA 3-D Positioning of Marine Vessels using GPS Layout of GPS equipment on container ships

10. National Ocean Service NGS, NOS, NOAA Relating Height Information to GPS Determine heights relative to local mean sea level surface using tidal observations Determine bathymetric heights relative to the ellipsoid using GPS Occupy tidal stations with GPS Occupy NAVD 88 Bench Marks with GPS

11. National Ocean Service NGS, NOS, NOAA Relating Tidal Information to GPS

12. National Ocean Service NGS, NOS, NOAA Water Level Values in the Middle of the Channel

13. National Ocean Service NGS, NOS, NOAA Bridge Vertical Clearance Using GPS NGS provided the Port of Charleston with elevations to determine vertical clearances for large marine vessels navigating beneath two bridges. The clearances were determined using a combination of geodetic data: satellite GPS data, classical leveling observations, and specially designed trigonometric leveling techniques. GPS Antennas

14. National Ocean Service NGS, NOS, NOAA Digital Docking Charts and Shoreline

15. National Ocean Service NGS, NOS, NOAA Computer Screen on the Bridge of the Ship

16. National Ocean Service NGS, NOS, NOAA NOTE: Clearance is 0.6 m

17. National Ocean Service NGS, NOS, NOAA Conclusion NSRS provides the spatial consistency needed to relate objects to one another. GPS provides the capability for acquiring positional data, techniques developed by NOAA provide the capability for achieving the levels of positional accuracies required.